Calculator formulas
Bible Unit Calculator Formulas and Assumptions
Plain-language formulas used by the Bible Unit Calculators. These explain how manual values, unit constants, material densities, and modern estimates are combined.
Weight conversion
quantity × unit grams = total grams; total grams ÷ 1000 = kilograms; kilograms × 2.2046226218 = pounds
Metal value estimate
total grams ÷ 31.1034768 = troy ounces; troy ounces × USD price per troy ounce = USD metal value; USD value × manual FX rate = converted currency
Wage comparison
quantity × unit wage-day estimate × manually entered modern daily wage = modern wage comparison
Volume conversion
quantity × unit litres = total litres; litres × 0.2641720524 = US gallons
Volume-to-weight estimate
total litres × selected material kg/L density = kilograms; kilograms × 2.2046226218 = pounds
Length and distance
quantity × unit metres = total metres; metres × 3.280839895 = feet; metres ÷ 1000 = kilometres; kilometres × 0.6213711922 = miles
Equivalent biblical units
base grams/litres/metres ÷ another unit’s grams/litres/metres value = equivalent quantity in that unit
Pre-filled calculator links
The calculator page accepts simple URL parameters: calc, qty, unit, metal, and material. Worked examples use these links so readers can open the calculator already filled with the example values.
Assumptions
- Ancient units varied by period, region, and standard.
- Metal value estimates are not identical to ancient purchasing power.
- Dry-measure weight depends on the selected substance density.
- Hour and watch times are approximate and depend on daylight, season, and local reckoning.
- Modern FX, metal-price, and daily-wage values are manually maintained in current-values.json.